DataSource attribute for unit test method - unit-testing

Question

I try to use CSV data source in Device unit test (WinCE/Pocket PC2003 Emulator)
I have added source in using wizard in Data Connection String property:
using Microsoft.VisualStudio.TestTools.UnitTesting;
....
[TestMethod()]
[DeploymentItem("Options.txt")]
[DeploymentItem("Options_1.txt")]
[DataSource("Microsoft.VisualStudio.TestTools.DataSource.CSV", "C:\\...\\Tests\\Data\\LoadSettingsTest.csv", "LoadSettingsTest#csv", DataAccessMethod.Sequential)]
public void LoadSettingsTest()
{
...
}
I have following compiler error:
Error 1 The type or namespace name 'DataSource' could not be found
(are you missing a using directive or an assembly reference?)
Error 2 The type or namespace name 'DataSourceAttribute' could not be
found (are you missing a using directive or an assembly reference?)
What's? Where DataSource is defined? Is data DataSource attribute supported in device unit tests?

Answer 1

DataSource is not supported by Device Unit Testing Framework, see Unit Testing Framework (Devices).

Answer 2

It looks like you are trying to use a Comma Separated Values (CSV) file as a DataSource.
You should convert your CSV data into something a Data Control is familiar with first.
Here is an example:
private const string FIELD_SEP = "\t";
private const string LINE_BREAK = "\r\n";
private const int ONE_KB = 1024;
private System.Data.DataTable GenerateData(string csvDataFile) {
var sb = new System.Text.StringBuilder();
using (var file = File.Open(csvDataFile, FileMode.Open, FileAccess.Read)) {
byte[] buffer = new byte[ONE_KB];
int len = file.Read(buffer, 0, ONE_KB);
while (-1 < len) {
string oneK = Encoding.UTF8.GetString(buffer, 0, len);
sb.Append(oneK);
len = file.Read(buffer, 0, ONE_KB);
}
}
var table = new System.Data.DataTable();
var col1 = table.Columns.Add("ID", typeof(int));
var col2 = table.Columns.Add("Name", typeof(string));
var col3 = table.Columns.Add("Date", typeof(DateTime));
var col4 = table.Columns.Add("Cost", typeof(decimal));
var lines = sb.ToString().Split(LINE_BREAK.ToArray());
foreach (var line in lines) {
System.Data.DataRow row = table.NewRow();
var fields = line.Split(FIELD_SEP.ToArray());
row[col1] = int.Parse(fields[0]);
row[col2] = fields[1];
row[col3] = DateTime.Parse(fields[2]);
row[col4] = decimal.Parse(fields[3]);
table.Rows.Add(row);
}
return table;
}
Of course, I have no idea what kind of data you are trying to extract from this CSV file, and there is no error checking. If field[3] were an empty string, decimal.Parse(field[3]) would throw an exception.